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Re: RDF Concepts - What is a Node?

From: Thomas Baker <tom@tombaker.org>
Date: Wed, 30 May 2012 09:32:14 -0400
To: Pat Hayes <phayes@ihmc.us>
Cc: Richard Cyganiak <richard@cyganiak.de>, nathan@webr3.org, RDF WG <public-rdf-wg@w3.org>, David Wood <david@3roundstones.com>
Message-ID: <20120530133214.GA19778@alpha.dublincore.org>
On Wed, May 30, 2012 at 09:28:56AM -0400, Tom Baker wrote:
> > >>>> {
> > >>>> [] a :Person ;
> > >>>> :mailbox <mailto:foo@bar.com> .
> > >>>> 
> > >>>> [] a :Person ;
> > >>>> :mailbox <mailto:bar@foo.com> .
> > >>>> }
> > >>>> 
> > >>>> then how many nodes does this contain? 4?
> > >>> 
> > >>> No. Five. Two blank nodes, the IRI :Person, and two mailto IRIs.
> > >> 
> > >> I think it is 4. The :Person IRI only occurs as a property. 
> > > 
> > > Look again, Pat.
> > 
> > Whoops. Sorry. (I am STILL not used to the 'a' convention. To hell with N3, I say.)
> 
> Hang on, then.  Are there not then 6 nodes in the graph?  Two blank
> nodes, the IRI :Person, two mailto IRIs, and the IRI rdf:type, as per:
> 
>     The token _a_ in the predicate position of a Turtle triple represents
>     the IRI http://www.w3.org/1999/02/22-rdf-syntax-ns#type . [1]

Sorry - never mind - we're talking about nodes here...

Tom

-- 
Tom Baker <tom@tombaker.org>
Received on Wednesday, 30 May 2012 13:32:54 GMT

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